---
id: CVE-2026-81002
title: 'kernel: xdp: fix zero-copy frame layout (CVE-2026-81002)'
summary: >-
  A flaw was found in the Linux kernel's XDP (eXpress Data Path) component.
  Incorrect handling of zero-copy frame layout in the
  `xdp_convert_zc_to_xdp_frame()` function can allow an AF_XDP zero-copy packet,
  when redirected through `cpumap`, …
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe: CWE-787
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:35:54+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81002.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81002.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-81002'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532133'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-81002'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81002'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81002.mbox
  - url: 'https://git.kernel.org/stable/c/dcb6db9ca6515fcd3e00c93ec5e27dc7a0a7012f'
  - url: 'https://git.kernel.org/stable/c/22092730129077c302d8c947bbe0876f0280c528'
  - url: 'https://git.kernel.org/stable/c/ced3e18cd9b9caf630aaa1e1eac305f5192ba896'
  - url: 'https://git.kernel.org/stable/c/6de17275b3ccdf9887568b07e54da2e3597217cf'
  - url: 'https://git.kernel.org/stable/c/444216dacdbebd3e52d5e704facafbb230da09e9'
  - url: 'https://git.kernel.org/stable/c/15d1f3c0dbe7a740f779337deb39f23cd8d002c8'
  - url: 'https://git.kernel.org/stable/c/68d7cc5512238693670fc19c7a615df631e10edf'
  - url: 'https://git.kernel.org/stable/c/71283aaa6c65b3cec84caf1dc78560985737641f'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00521
epssPercentile: 0.43234
scores:
  vendor: 7
  cna: 9.8
ingestedAt: '2026-09-14T15:23:07.454Z'
---

## Overview

A flaw was found in the Linux kernel's XDP (eXpress Data Path) component. Incorrect handling of zero-copy frame layout in the `xdp_convert_zc_to_xdp_frame()` function can allow an AF_XDP zero-copy packet, when redirected through `cpumap`, to cause a memory corruption. This can lead to a slab-out-of-bounds error, resulting in a kernel panic and a Denial of Service (DoS) for the system.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81002.json)

**kernel: xdp: fix zero-copy frame layout** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7

## Remediation

Affected